Class II MHC are found on
A. the skin.
B. red blood cells.
C. cytoplasmic membranes of nucleated cells.
D. muscle cells.
E. professional antigen-presenting cells.
Answer: E
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Differential selection and reproduction of phenotypes occurs during a process called
A) cellular differentiation. B) evolution. C) growth. D) transformation.
With each change in trophic level we can expect a ____% transfer of biomass
a. 5 b. 10 c. 25 d. 50 e. 20
Peter and Rosemary Grant are known for their work on
A) Tenebrionid beetles. B) marine iguanas. C) Galápagos tortoises. D) Darwin's finches.
How does one account for the bubbles in a glass of beer or champagne?
A) Bubbles of CO2 were formed by the yeast cells during glycolysis. B) Bubbles of CO2 were produced by yeast during anaerobic metabolism and were trapped in the bottle. C) The bubbles are simply air bubbles resulting from the brewing process. D) Bubbles of CO2, produced by aerobic respiration in yeast cells, were trapped in the beverage at bottling. E) Lactate fermentation accounts for the bubbles.